Keyless lock.



PATBNTED JAN. 6, 1903.

L. P. KELLER.

KEYLESS LOCK.

APPLICATION IILED FEB. 4, 1901.

N0 MODEL.

UNITED STATES PATENT Orrrcs.

LOUIS P. KELLER, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-FOURTH TO GEORGEL. LAVERY, OF CHICAGO, ILLINOIS.

KEYLESS LOCK.

SPECIFICATION forming part of Letters IPatent No. 718,002, dated January 6, 1903.

' Application filed February 4,1901. $erial No. 45,931.. (No model.)

To aZZ whom it. may concern;

Beit known that I, LOUIS P. KELLER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new andiuseful Improvements in Keyless Locks, as fully set forth in the following description, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to improvements in keyless locks; and it consists in the novel combination and arrangement of parts, as will be hereinafter more particularly described and claimed.

In the drawings, Figure 1 is a front elevation of my complete invention. Fig. 2 isa longitudinal section taken on the line a: a: of Fig. 1. Fig. 3 is an end view of the keeper. Fig. 1 is a plan view of the dial. Fig. 5 is an edge view of the central disk which forms a part of the lock. Fig. 6 is a plan view of.

the same. Fig. 7 is a plan view of the disk with which the operating-spindle cooperates. Fig. 8 is an edgeview of the same. Fig. 9 is an edge View of the outer disk. Fig. 10 is a plan view of the same. Fig. 11 is a plan view of the bolt and the spring forming apart of the same for operating the bolt in one direction. Fig. 12 is a longitudinal section of the keeper, taken on the line 01 y of Fig. 2. Fig. 13 is a sectional view of the central disk, taken on the line 22 of Fig. 6. Fig. 14. is a plan view of my complete invention, showing a construction applicable to car or sliding doors. Fig. 15 is a longitudinal section, taken on the line a a of-Fig. 14, of the hasp with which the bolt cooperates; and Fig.

16 is a plan view of the dial and pointer, showing a slightly-modified form.

The object of my invention is to construct a combination-lock for doors and the like to be used particularly as a night-lock, or where there is not sufficientlight to see the pointer and dial, thus dispensing withthe use or employment of a key to unlock {the door, and, further, one that can be manipulated or operated from the outside particularly by the sense of touch, whereby it may be operated successfully without theuse of the eyes of the operator, and consequently can be unlocked at night without any difficulty.

The dial and pointer which I employ in carrying out my invention is the most essential feature of my invention, the said dial being devoid of all marks or figures, but having a number of points circumferentially arranged, which dial is secured to the door, the operating-spindle of the lock passing loosely through the same, and fixed to the projecting end of said spindle-and cooperating with said dial is a pointer the indicatingpoint of which is substantially the same shape as the points of the dial.

My invention further consists in the specific construction of the lock, whereby the combination may be changed at any time without removing the said lock from the door, all of which will appear from the detail description to follow.

Referring to the drawings, 1 represents a portion of a door-frame and 2 a door, to both of which my lock may be easily and readily attached by simply boring a hole 3 through the door for the free passage of the operating rotatable spindle 4 of the lock. To the inside of the door is secured a casing 5 by means of screws 6, within Whichis located the circular disk 7, the latter being provided with an cetagon or polygonal shaped opening 8, which freely receives the correspondingly-shaped end 9 of said spindle, the said disk being free to turn within thesaid casing when said spindle is operated or turned. The disk 7 is provided with a cut-away portion 10, and leading from the same is a cam -surface 11, which when brought against the inner reduced engaging end 12 of the bolt 13 forces the same outwardly or in a locked position, the said cut-away portion 10 permitting said bolt to move in the opposite direction when the said disk is turned in its proper position by the action of the coil-spring 14, located within the opening 15 and interposed between one of the walls of said opening and a plate 16 in contact with the screw 17, the latter passing through the casing of the lock and opening 15 of the bolt 13 and into the doorforholding the said bolt within the casing and further limiting its outward movement. Also loosely confined within the casing 5 of the lock and adjacent to the disk 7 is a second intermediate rotatable disk 18, from the inner circumference of which projects a right-angularshaped lug 19, with which cooperates the lug 20, forming a part of the disk 7 when the latter is turned in either direction, and thus bringing the cut-away portion 21 of the disk 18 opposite the reduced end 12 of the bolt 13, and further loosely confined within the cas ing 5 of the lock and adjacent to the disk 18 is a third disk 22, to the inner periphery of which is secured one end of a spring 23, the projecting extension 24 of the right-angularshaped lug of the disk 18 being adapted to cooperate with the free end of the spring 23 of the disk 22, the latter disk also having a cut-away portion 25 for likewise receiving the reduced end of the bolt when the same is turned in its proper position, the third disk 22 having no pin or lug, as it is the last disk made use of in the lock.

Secured to the outside of the door 2 is an index-plate 26, through which the spindle 4 loosely passes, the latter projecting a suitable distance beyond said plate, to which end is rigidly secured an operating-pointer 27, the point of which is substantially the same shape as the points 28 of the index-plate 26.

To the door-frame, in a horizontal line with the lock, is secured a box 29, the top of which is partially open,as shown at 30, and movably located within said box is a spring-operated keeper 31 for receiving the looking forward end of the bolt 13, and interposed between the keeper 31 and the rear wall of the box 29 is a flat spring 32, which operates to hold the said keeper in a position to receive the bolt 13. In order to movably secure the keeper 30 within the box 31, elongated recesses 35 are formed on the opposite sides of the said keeper,and passed through said box and elongated recesses and into the door-frame l are screws 36, which also hold the box to said frame.

By constructing the keeper in the manner above described the door can be easily opened from the inside by moving the said keeper from over the bolt compressing the spring, whereby the bolt is free and the door opened. In closing the door it is not necessary to manipulate the keeper, as the projecting end of the bolt will come in contact with the curved face 33 of the keeper, forcing the same backward, after which it will move over the bolt by the action of the spring 32 when the door is completely closed, and thereby lock the latter.

When it is desired to open the door from the outside and the combination known, the pointer 27 is turned in either direction the proper number of times and brought directly opposite the proper points 28 of the dial 26, as in any well-known combination-lock, in order to bring the cut-away portions of the several disks in line with one another for receiving the reduced inner end 12 of the bolt 13, the coil-spring 14 automatically forcing said bolts back when said disks are in the position as above described.

Should it be desired to change the combination of the lock, the index-plate 26 is removed from the door 2, together with the spindle 4, and the latter turned in any suitable position in respect to the opening of the disk 7, the said spindle being held in its proper position by a pin 34 passing through the said spindle, the ends of which project beyond the same and cooperate with the inner surface of the index-plate adjacent to the opening 3, formed in the door 2.

In Figs. 14 and 15 I have shown amodification of my invention or the lock applied to a sliding door in which the spring 14 for operating the bolt 13 in one direction may be entirely dispensed with, as the lock is turned in a suitable position to cause said bolt to be operated entirely by gravity, in which instance a plate 37 is secured to the frame of the door, and hinged to one edge of the same isa hasp -or bar 38, having a recess 39 for the reception of the locking end of the bolt 13, the latter construction being'more applicable to freightcars or doors of sliding construction.

Having fully described my invention, what I claim is- 1. In a keyless look, a rotatable spindle, an index-plate surrounding the latter, and having circumferentially arranged points, a pointer secured to said spindle, the end of which is substantially the same shape as the points on the index-plate, substantially as described.

2. A' keyless lock, comprising a casing, disks con fined within the same and operating with one another, a spindle cooperating with one of the disks, an index-plate surrounding said spindle and having circumferentiallyarranged points, a pointer secured to said spindle, and having an end corresponding in shape to said points of the dial, a bolt also confined within said casing, the inner end of which cooperates with said disks, a cam-surface formed on the disk operated by the spindle for actuating the bolt in one direction, an opening formed in said belt, a screw passed through said casing and opening of the bolt, a coil-spring located in said opening for operating the bolt in the opposite direction, a box, a keeper movably secured to said box, and a flat spring located within said box, the medial portion of which bears against said keeper, substantially as described.

3. In a keyless lock, a casing, disks con fined within the same, a rotatable spindle cooperating with one of said disks, a pointer forming a part of said spindle, an index-plate having circumferentially arranged points through which plate the said spindle passes, a bolt carried by the casing, and operated in one direction by the disk which cooperates with the spindle, and a movable keeper for I tions of the indicator and dial may be deterreceiving the end of said bolt, as and for the mined by the fingers of the operator embracpurpose described. ing one of said projections and the adjacent 4:. In a keyless lock, the combination with portion of the indicator. 5 a dial, of an indicator movable relatively to In testimony whereof I hereunto affiX my I5 said dial,aseries of projections on said dial signature in presence of two witnesses.

located adjacent to the path of movement of LOUIS P. KELLER. said indicator, said indicator having a por- Witnesses: tion substantially conforming in contour to IDA G. ROCK,

TO said projections, whereby the relative posi- LIZZIE KLOPF. 

